Horned Lizard

Above, a resident of my yard. Photo by Armand Vaquer.

For the past several days, I've seen this critter in my front yard. First, it was over by the garage and then, yesterday, it was in front of my house.

I've seen others here before, but this chap is the largest one I've seen.

Since he didn't seem to be in any hurry to run off, I stopped and took some pictures.

From Wikipedia:

Phrynosoma, whose members are known as the horned lizards, horny toads, or horntoads, is a genus of North American lizards and the type genus of the family Phrynosomatidae. Their common names refer directly to their horns or to their flattened, rounded bodies, and blunt snouts.

The generic name Phrynosoma means "toad-bodied". In common with true toads (amphibians of the family Bufonidae), horned lizards tend to move sluggishly, often remain motionless, and rely on their remarkable camouflage to avoid detection by predators. They are adapted to arid or semiarid areas. The spines on the lizard's back and sides are modified reptile scales, which prevent water loss through the skin, whereas the horns on the head are true horns (i.e., they have a bony core). Of the 21 species of horned lizards, 15 are native to the USA. The largest-bodied and most widely distributed of the American species is the Texas horned lizard.